Apparatus for producing light of variable color effects



March 26, 1940. J. A. HANSSON APPARATUS FOR PRODUCING LIGHT OF VARIABLE COLOR EFFECTS Filed April 10, 1939 "2 the impression of a'burr'iing'fire Withas cending P ed in open fir p wes, hoa ths O he Fig. 1. shows a side viewof'the apparati s s in the form of 'fiashes of alternating colors, 30

' in Fig. 1;

Ored, for example alternately yellow and red, the same. The oblique positiontof, the strips 521 56 I Patented'Manzfi, 1940 I v I I earse stares shrew-r" carr es APPARATUS For: PRODUCING 'L'IGHT 0F 1 VARIABLE COLOR EFFECTS Johan Alfred Hansson, Trelleborg, Sweden Application April 10, 1939, Serial No. 267,150

- 1 In Sweden April 26, 1938 I,

h 8 Claims. ';(o1. 24o 10.1)

The present invention refers to apparatus for Wise of two different colors which are carried 7 producing light ofyaria-ble color efiects, of the by a spider 'andtheradial edges of which 'overtype which are provided witha light same and lap each other. i a substantially cylindrical light screen which is Thecolored screen 6 is surrounded by an outer 5 slotatably mountecl' around said light source and tationary scr en mounted 011 thebase 2 n "5 the peripheral surface of which is composed of having a cylindrical peripheral surfacewhich is a plurality of preierablydliferently colored bands t n such a ma n r that' omprises a 1 1- 0r strips, said screen being rotatable. "under the mlity of slots i 1 extending in the longitudinal g 1 action of an ascending air current which is di ection of the peripheral surface and imper- 10 produced by the light source, -Vi0lls bands or strips 52 which are disposed in 10 The principal object of the invention is to n oblique DOSitiOn'aS is S OWIi n g- 01" Provide an apparatus of this type which is capdrawing. The strips. [are Substantially plane able of producing color effects i th form of throughout their length. -Tnescr'en if! is tera train of alternating colors. similar to a flash minated at ts top'by a fine me hejol net iii w i 1'5 light or imitating names of v is fastened into a ring it and protected by guard 15. Anotherobject of the invention is to provide Wlres It. The'strips l2 have smooth inside an apparatus oi "the type referred to which, surfaces which serve as areiiector andblack when placed in an open'fireplace or hearth and a quered outer surfaces. 7 t t concealed for example by logs of wood, will give aph u s p m t de o be flames and smoke. g gs of wo'od}. or the like being'piled around the A further object of the inventie nis to provide p us." W e t e, light S n; the an pparatus which may be mounted within a pparatus is switched onto emit-light; the air transparent or translucent light globe and used current produced around h iieht m tc due", 5 as an advertising or display ap t in 1 to the heattherefrom causes the propeller blades "'25 Windows and the like. 1 to rotate the inner colored screenfi. The light The invention will be more fully described from the light source coming out through each in a preferred form With'reference-to the accom- Slot II has fir rn y p s d i d' p panying drawing,- in which: I l l and spaces 8 of the screen 6', sothat said light cording to the invention, part of the outer light n White and Colored g and causes e screen of the apparatus being'broken away to. illusion of ascending flames f f re in" a v r expose the parts behind it; i v natural manner. The'light reflected upwardly Fig; 2 is a transverse sectionon' the line II--II h Q h p p ll r a s -t e net causes the illusion of ascending smoke through the*3-5 Fig. Bis atransverse'seotion on the line III-III Provision of i The total effect of the in-Fig,.1'; d apparatus'is thereby such as to cause an iin- Fig, shows a plan V f't part pression of a burning fire in theopt'n fireplace f the apparatus. 1 0r the'likeprovided with theapparatus. v 40 Referring to the drawing, l designates an.elec The apparatus'may also b disposed Within a '40 tri in d t lamp which is veffifiany transparent or translucent lamp globe to proported b a b 2, h l 1 is prgyided on duce a flickering light of alte'rnatingicolors upon its upper part with an elastic clamp or holders the wall of said globe. The entire unit-may he which embracgs the lamp r and cal-rigs an placed for example in a show-window or thepwardly projecting pointed n dl -4 Upgn likefiami used as al'i advertisement" sesame-s1 45 this needle rests av cap forming a hearing which The inventibn u t t' e n de ed im d is secured to a screen surrounding the incant form thereof idescribd shown descent'lamp and comprising cylindrical per in the drawing, as it'm'ay be varied in several time composed of a plurality of dilferently colways without exceeding the general scope of transparent or translucent bands or strips and shown in Fig. 2 has proved advantageous, where intermediate clear spaces 8, seeFig'. 2. Thecolthe colored screen 6 rotates in the direction inorecl strips extend parallel to each other to dicated by the arrow in said figure, since therethe axis of the screen cylinder. At the top' the by the air flowing in through the outer screen screen 6 is terminated by propeller blades likeobtains the same; direction of movement that:

colored strips 1 of the inner screen, but it is also practicable to use an otherwise oblique position of said strips l2. Although the colored strips have been shown extending vertically and parallel to the axis of the cylindrical screen 6, they may also be placed in an inclined position in relation to said axis. Further, the edges of the colored strips need not be straight but may also for example be corrugated in a plane at right angles to the plane of the strip. The slots ll may be wider than shown in the radial direction. An arbitrary number of different colors may be used for the strips of the inner screen, as desired for various purposes.

What I claim and desire to secure byLetters Patent is:

1. An apparatus for producing light of variable color effects, comprising a base, a light source, a substantially cylindrical inner screen rotatably mounted around said light source, the peripheral surface of said inner screen being composed of a plurality of colored, light transmitting strips, means for rotating said inner screen under the action of an ascending air current produced by said light source, a stationary, substantially cylindrical outer screen mounted on said base round the outside of the inner screen and composed of a plurality of alternately impervious and transmitting strips extending substantially in the axial direction of said outer screen, said im-. pervious strips being disposed in an oblique position in relation tothe peripheral surface of said outer screen.

2. An apparatus for producing light of variable color effects, comprising a base, a light source supported by said base, a substantially cylindrical inner screen rotatably mounted around said light source, the peripheral surface of said inner screen being composed of a plurality of colored, light transmitting strips, means for rotating said inner screen under the action of an ascending air current produced by said light source, a stationary, substantially cylindrical outer screen mounted on said base round the outside of the inner screen and composed of a plurality of alternately impervious and transmitting strips extending substantially in the axial direction of said outer screen, said impervious strips being disposed in an oblique position in relation to the peripheral surface of said outer screen.

3. An apparatus for producing light of variable color effects, comprising a base, a light source, a substantially cylindrical inner screen rotatably mounted around said light source, the

peripheral surface of said inner screen being composed of a plurality of colored, light transmitting strips separated by intermediate clear spaces, means for rotating said inner screen under the action of an ascending air current produced by said light source, a stationary, substantially cylindrical outer screen mounted on said base round the outside of the inner screen and composed of a plurality of alternately impervious and transmitting strips extending substantially in the axial direction ofsaid outer screen, said impervious strips being disposed in an oblique position in relation to the peripheral surface of said outer screen.

4. An apparatus for producing light of variable color effects, comprising a base, a light source, a substantially cylindrical inner screen rotatably mounted around said light source, the peripheral surface of said inner screen being composed of a plurality of colored, light transmitting strips, propeller means at the top of the inner screen for rotating said inner screen under the action of an ascending air current produced by said light source, a stationary, substantially cylindrical outer screen mounted on said base round the outside of the inner screen and composed of a plurality of alternately impervious and transmitting strips extending substantially in the axial direction of said outer screen, said impervious strips being disposed in an oblique position in relation to the peripheral surface of said outer screen.

5. An apparatus for producing light of variable color effects, comprising a base, a light source, a substantially cylindrical inner screen rotatably mounted around said light source, the peripheral surface of said inner screen being composed of a plurality of colored, light transmitting strips, means for rotating said inner screen under the action of an ascending air current produced by said light source, a stationary, substantially cylindrical outer screen mounted on said base round the outside of the inner screen and composed of a plurality of impervious strips separated by slots, said impervious strips extending substantially in the axial direction of said outer screen and being disposed in an oblique position in relation to the peripheral surface of said outer screen.

6. An apparatus for producing light of variable color eifects, comprising a base, a light source supported by said base, a substantially cylindrical inner screen rotatably mounted around said light source, the peripheral surface of said inner screen being composed of a pill rality of colored, light transmitting strips, means for rotating said inner screen under the action of an ascending air current produced by said light source, a stationary, substantially cylindrical outer screen mounted on said base round the outside of the inner screen and composed of a plurality of alternately impervious and transmitting strips extending substantially in the axial direction of said outer screen, said impervious strips being disposed in an oblique position in,

relation to the peripheral surface of said outer screen, a lid closing the outer stationary screen at the top thereof and comprising impervious and transmitting portions.

7. In anapparatus as claimed in claim 6 the additional feature that said lid closing the outer stationary screen at the top thereof consists of a fine-meshed net.

-8. An apparatus for producing light of variable color effects, comprising a base, a light source, a substantially cylindrical inner screen rotatably mounted around said light source, the peripheral surface of said inner screen being composed of a plurality of colored, light transmitting strips, means for rotating said inner screen under the action of an ascending air current produced by said light source, a stationary, substantially cylindrical outer screen mounted on said base round the outside of the inner screen and composed of a plurality of impervious strips separated by slots, said impervious strips extending substantially in the axial direction of said outer screen and being disposed in an oblique position with their leading longitudinal edges, as seen in the direction of movement of the inner screen, situated radially within the trailing longitudinal edges of said impervious strips.

JOHAN All-FRED HANssoN, 

